package com.ujiuye.web;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/ajaxDemo")
public class ServletDemo01 extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");
        //获取用户名参数
        String name=req.getParameter("name");
        if ("admin".equals(name)){
            //用户名重复
            resp.getWriter().println("<font color='red'>用户名重复</font>");
        }else {
            //不重复
            resp.getWriter().println("<font color='green'>用户名可用</font>");
        }
    }
}
